Hiding payment information when a coupon is added zeroing the order via JS

I know the issue of hiding the Payment Information when an order is $0 has bee resolved, Allow free orders (checkout without payment), but I'm wondering if the issue in comment #15 has been addressed yet.

The issue I'm having is that you have to manually refresh the page after entering a coupon on the payment page that reduces the order to 0. I see that the order summary is updated via JS when the coupon is either added or removed but not the payment info switching between payment and billing. Is this possible? Would forcing a page refresh on the checkout page if an applied coupon.

I believe the coupon module in Drupal 7 just did a refresh whenever a coupon was added so the order info could be update and the payment info could be hidden.